Java learning the next day-arrays

Source: Internet
Author: User
Tags array definition

1, although the array provides a good function to save a set of variables, but because of the problem of the array congenital-fixed length, it is decided that the array in the actual work is not so commonly used, but in the written examination like to test the logical problem of the array;

2, the array must grasp the following points:

· Array definition Format (dynamic and static), memory allocation;

· Use the For loop to output an array;

· For the given interview question: array sorting, array inversion;

3, the array of two operation methods: System.arraycopy (), Java.util.Arrays.sort (), to remember the use of the future will have detailed instructions;

4, for the simple Java class must remember its written rules, while it is easy to implement the simple Java class writing;

5, class and object definition, relationship, memory allocation (this memory allocation will be the basis of the next course);

Java learning the next day-arrays

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